﻿#include <iostream>
#include <string>
using namespace std;

int main() {
	string s1 = "ABC";
	string s2 = "XYZ";

	s1 = "FBI";

	cout << "字符串s1是：" << s1 << "。\n";
	cout << "字符串s2是：" << s2 << "。\n";

	cin.get();
}